Upgrading a value if you have 5 or more gems?

This is supposed to upgrade the value MaxHealth which is in the model ds, if you have 5 Gems or more only. What is wrong?

local player = game.Players.LocalPlayer 
local health = player.ds.MaxHealth
local gems = player.ds.Gems

function Click()

if  gems.Value >= 5 and health.Value >= 120 then
    gems.Value = gems.Value - 5
    health.Value = health.Value + 20    
    script.Parent.Parent.Parent.Script.Disabled = false
    wait(.2)
    script.Parent.Parent.Parent.Script.Disabled = true

elseif  gems.Value >= 5 and health.Value == 100 then
    gems.Value = gems.Value - 5 
    health.Value = 120
    script.Parent.Parent.Parent.Script.Disabled = false
    wait(.2)
    script.Parent.Parent.Parent.Script.Disabled = true
end
end

script.Parent.MouseButton1Down:connect(Click)